最近想寫段Android程序玩玩。開發環境 Eclipse ,Android 2.2
開發環境搭建
1.先安裝jdk
2.下載安裝eclipse
3.下載安裝android sdk
4.安裝eclipse插件 adt
5.配置 Window > Preferences 中的android sdk路徑
6.創建 AVD
實現方法很簡單
1.把通訊錄中的聯系人，電話號碼保存到txt文件中完成備份。
2.讀取txt文件，導入到通訊錄完成還原。
具體代碼
1.添加 通訊錄讀寫權限，存儲卡寫權限
<uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
<uses-permission android:name="android.permission.WRITE_CONTACTS"></uses-permission>
2.寫文件代碼
File saveFile=new File("/sdcard/test.txt");
FileOutputStream outStream;
try {
outStream = new FileOutputStream(saveFile);
outStream.write(str.getBytes());
outStream.close();
} catch (Exception e) {
setTitle(e.toString());
}
3.取通訊錄聯系人
str="";
Cursor cur = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
if (cur.moveToFirst()) {
int idColumn = cur.getColumnIndex(ContactsContract.Contacts._ID);
int displayNameColumn = cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
do {
String contactId = cur.getString(idColumn);
String disPlayName = cur.getString(displayNameColumn);
str+=disPlayName;
int phoneCount = cur.getInt(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
if(phoneCount>0){
Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,ContactsContract.CommonDataKinds.Phone.CONTACT_ID+ " = " + contactId, null, null);
int i=0;
String phoneNumber;
if(phones.moveToFirst()){
do{
i++;
phoneNumber= phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
if(i==1)
str=str+","+phoneNumber;
System.out.println(phoneNumber);
}while(phones.moveToNext());
}
}
str+="\r\n";
} while (cur.moveToNext());
}
}
4.讀文件代碼
try {
File file = new File("/sdcard/test.txt");
FileInputStream inStream = new FileInputStream(file);
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
byte[] buffer = new byte[1024*5];
int length = -1;
while((length = inStream.read(buffer)) != -1 ){
outStream.write(buffer, 0, length);
}
outStream.close();
inStream.close();
String txt= outStream.toString();
} catch (IOException e){
setTitle(e.toString());
}
5.寫通訊錄
ContentValues values = new ContentValues();
Uri rawContactUri = getContentResolver().insert(RawContacts.CONTENT_URI, values);
long rawContactId = ContentUris.parseId(rawContactUri);
values.clear();
values.put(Data.RAW_CONTACT_ID, rawContactId);
values.put(Data.MIMETYPE, StructuredName.CONTENT_ITEM_TYPE);
values.put(StructuredName.GIVEN_NAME, name);
getContentResolver().insert(Data.CONTENT_URI, values);
values.clear();
values.put(Data.RAW_CONTACT_ID, rawContactId);
values.put(Data.MIMETYPE, Phone.CONTENT_ITEM_TYPE);
values.put(Phone.NUMBER, num);
values.put(Phone.TYPE, Phone.TYPE_HOME);
getContentResolver().insert(Data.CONTENT_URI, values);
Android手機通訊錄備份還原代碼下載地址
免費下載地址在 http://linux.linuxidc.com/
用戶名與密碼都是www.linuxidc.com
具體下載目錄在 /pub/Android源碼集錦/2011年/11月/Android手機通訊錄備份還原代碼/
